b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
158s
max time network
156s
platform
ubuntu-20.04_amd64
resource
ubuntu2004-amd64-20240221-en
resource tags

arch:amd64arch:i386image:ubuntu2004-amd64-20240221-enkernel:5.4.0-169-genericlocale:en-usos:ubuntu-20.04-amd64system
submitted
01-03-2024 21:28

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General

Target

The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
Size

8.7MB
MD5

3fe7b88a9ba6c5acee4faae760642b78
SHA1

bae245bc98c516604838c6ce5a233f066de44a50
SHA256

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
SHA512

02abc8d4fe280306a9ac6a25d28cf174a8d51a43d98b6837bc129701d8c0ab486eebaeef11062b58c455627d4de7c8782b3828aa02891fe439ca1ca617038f95
SSDEEP

98304:g4K0/V2eKEDj+VK61qXXiQqwMwUa/f0OstejSUVv7Xk:g4K0/V2eKM+D4SQbMwX/f0Oskz

Score

8^/10

antivm infostealer persistence

Malware Config

Signatures

Adds new SSH keys 1 IoCs
Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.
persistence

Processes:

description ioc

File opened for modification /root/.ssh/authorized_keys
Deletes itself 1 IoCs

Processes:

pid

1908
Reads EFI boot settings 1 IoCs
Reads EFI boot settings from the efivars filesystem, may contain security secrets or sensitive data.
infostealer

Processes:

journalctl

description ioc process

File opened for reading /sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67 journalctl
Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
antivm

Virtualization/Sandbox Evasion
T1497

Processes:

cat

description ioc process

File opened for reading /proc/cpuinfo cat
Deletes log files 1 TTPs 1 IoCs
Deletes log files on the system.

Indicator Removal
T1070

Processes:

description ioc

File deleted /var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
Enumerates running processes
Discovers information about currently running processes on the system

description	ioc
File opened for modification	/root/.ssh/authorized_keys

pid
1908

description	ioc	process
File opened for reading	/sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67	journalctl

description	ioc	process
File opened for reading	/proc/cpuinfo	cat

description	ioc
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freeuptimeuptimeuptimefreeuptimefreeuptimefreefreefreeuptimefreeuptimeuptimefreeuptimeuptimefreeuptimefreefreeuptimefreeuptimefreefreeuptimefreeuptime

description	ioc	process
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime

Enumerates kernel/hardware configuration 1 TTPs 1 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.

System Information Discovery
T1082

Processes:

journalctl

description ioc process

File opened for reading /sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67 journalctl

description	ioc	process
File opened for reading	/sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67	journalctl

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

freefreeuptime6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69cuptimeuptimeuptime

description	ioc
File opened for reading	/proc/1511/cmdline
File opened for reading	/proc/90/stat
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/177/stat
File opened for reading	/proc/20/stat
File opened for reading	/proc/491/stat
File opened for reading	/proc/786/stat
File opened for reading	/proc/1004/cmdline
File opened for reading	/proc/1126/cmdline
File opened for reading	/proc/1195/cmdline
File opened for reading	/proc/807/cmdline
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1099/cmdline
File opened for reading	/proc/614/cmdline
File opened for reading	/proc/614/stat
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/969/cmdline
File opened for reading	/proc/270/stat
File opened for reading	/proc/87/stat
File opened for reading	/proc/975/cmdline
File opened for reading	/proc/1/stat
File opened for reading	/proc/93/stat
File opened for reading	/proc/1516/cmdline
File opened for reading	/proc/1092/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1107/stat
File opened for reading	/proc/158/stat
File opened for reading	/proc/175/stat
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/275/cmdline
File opened for reading	/proc/668/cmdline
File opened for reading	/proc/1044/stat
File opened for reading	/proc/15/stat
File opened for reading	/proc/558/cmdline
File opened for reading	/proc/3/stat
File opened for reading	/proc/173/stat
File opened for reading	/proc/570/stat
File opened for reading	/proc/165/cmdline
File opened for reading	/proc/591/cmdline
File opened for reading	/proc/118/stat
File opened for reading	/proc/781/stat
File opened for reading	/proc/682/stat
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/570/cmdline
File opened for reading	/proc/991/cmdline
File opened for reading	/proc/12/stat
File opened for reading	/proc/4/stat
File opened for reading	/proc/1176/stat
File opened for reading	/proc/1905/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1176/cmdline
File opened for reading	/proc/8/cmdline
File opened for reading	/proc/958/cmdline
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/1439/cmdline
File opened for reading	/proc/804/stat
File opened for reading	/proc/1061/cmdline
File opened for reading	/proc/1097/cmdline
File opened for reading	/proc/762/stat
File opened for reading	/proc/558/stat
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/479/cmdline
File opened for reading	/proc/503/cmdline
File opened for reading	/proc/953/cmdline
File opened for reading	/proc/1439/stat
File opened for reading	/proc/self/auxv	uptime

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
1⤵
- Reads runtime system information
PID:1905

/usr/bin/uname
uname -a
1⤵
PID:1917

/usr/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1918

/usr/bin/cat
cat /etc/issue
1⤵
PID:1919

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1920

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1921

/usr/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
- Reads EFI boot settings
- Enumerates kernel/hardware configuration
PID:1922

/usr/bin/cat
cat "/var/log/auth*"
1⤵
PID:1924

/usr/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1925

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1925

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1925

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1925

/usr/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1925

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1978

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1979

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2078

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2082

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2083

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2084

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2085

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2086

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2093

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2094

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2095

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2096

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2097

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2098

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2099

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2100

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2101

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2102

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2103

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2104

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2106

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2107

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2108

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2109

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2110

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2111

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2112

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2113

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Indicator Removal

T1070

Credential Access

Discovery

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

/root/.ssh/authorized_keys
Filesize
381B

MD5
9da18d38b6dd4c4aa84642378d63fa89

SHA1
c5a976691e4b5963b5e760044f22cc9685268db6

SHA256
43062900b2539d8d1f67f30fa7042c56b53541f63875b5f0de5d8fbde0e0a8bf

SHA512
222b20b5b2ff8956c13dbac1f8d3f81435613b751913d65f4c4082ea9c1a7c8ae91be17a24ef4ae0c708bfe09daab552bb209615714d70acfaaed89c536c71b3

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